Getting stacktrace in logger

Question

I am using log4j to log my exceptions. I want to log whatever I get in e.printStackTrace();
My code looks like this:

try {

} catch(Exception e) {
    log.error("Exception is:::" + e);
}

But the content I get logged looks like this:

2012-02-02 12:47:03,227 ERROR [com.api.bg.sample] - Exception in unTech:::[Ljava.lang.StackTraceElement;@6ed322
2012-02-02 12:47:03,309 ERROR [com.api.bg.sample] - Exception is :::java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

But the content I expect is:

java.io.IOException: Not in GZIP format
at java.util.zip.GZIPInputStream.readHeader(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at java.util.zip.GZIPInputStream.<init>(Unknown Source)
at com.api.bg.sample.unGZIP(sample.java:191)
at com.api.bg.sample.main(sample.java:69)

I tried e.getMessage(), e.getStackTrace(); however I don't get the full stacktrace. Any suggestions?

You can view bellow thread. It has complete answer stackoverflow.com/a/51655824/3073945 — Md. Sajedul Karim
– Md. Sajedul Karim, Commented Aug 2, 2018 at 14:19

David · Accepted Answer · 2014-11-12 11:10:17Z

93

You have to use the two argument form

log.error("my logging message", exception)

See http://www.devdaily.com/blog/post/java/how-print-exception-stack-trace-using-log4j-commons for more details.

edited Nov 12, 2014 at 11:10

David

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answered Feb 2, 2012 at 18:02

Brian Tarbox

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Comments

Jonathan · Accepted Answer · 2012-02-02 18:02:26Z

8

Change your logging statement to:

log.error("Exception is: ", e);

answered Feb 2, 2012 at 18:02

Jonathan

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Kurt Du Bois · Accepted Answer · 2012-02-02 18:02:24Z

4

It is actualy log4j that prevents the printing of the fulltime stacktrace. You should however set the exception as a second parameter for the error method.

answered Feb 2, 2012 at 18:02

Kurt Du Bois

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Arun · Accepted Answer · 2021-01-29 15:53:10Z

3

If you use the below than e.toString() will be called which calls e.getMessage()

log.error("Exception is:::" + e);

However, to print full stack trace you can use the below:

log.error("Exception is:::" + ExceptionUtils.getStackTrace(e));

where ExceptionUtils is imported as org.apache.commons.lang3.exception.ExceptionUtils

answered Jan 29, 2021 at 15:53

Arun

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Paul Roub · Accepted Answer · 2018-06-21 15:14:46Z

0

log.log(LEVEL.ERROR,e.getMessage(),e);

edited Jun 21, 2018 at 15:14

Paul Roub

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answered Jun 21, 2018 at 14:57

Mansa

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